Yaskawa MP900 Series Motion Programming Manual - Manual (Page 128)

Advanced Programming
3.2.6 MAXIMUM INTERPOLATION FEED SPEED (FMX)
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3.2.6 MAXIMUM INTERPOLATION FEED SPEED (FMX)
J Overview
The FMX command sets the maximum speed used when the interpolation speed commands
(MVS, MCC/MCW, SKP) are executed. The acceleration/deceleration time set by the IAC and
IDC commands is determined by this speed.
J
Description
The FMX command is designated as follows:
FMX T−;
Maximum interpolation feed speed
The FMX command sets the maximum interpolation feed speed. When creating a motion pro-
gram that uses interpolation commands, be sure to designate this command at the beginning of
the program. Once it has been set, it remains in effect until it is reset.
D The interpolation acceleration/deceleration time set by the IAC and IDC commands will be
the acceleration time until FMX is reached, and the deceleration time from FMX.
v
t
IDC IAC
FMAX
F designation
speed
The INTERPOLATION FEED SPEED RATIO SETTING (IFP) command sets a percentage of
the maximum speed designated by FMX as the interpolation feed speed.
D The FMX command reference range is as follows:
1 to 2 31 − 1 [reference units/min]
Typical Setting
D Motor rated r/min: 3000 min -1
D Fixed parameter setting No.17: in mm
No.18: Three digits below decimal point
No.19: Machine one rotation 10000 = 10.000 mm
In the above case, in order to rotate the one-axis motor at the rated r/min with the FMX command,
the following equation can be obtained.
3000 × 10.000 × 10 3 = 30000000.
↑ Number of digits below decimal point
Therefore, axis 1 becomes the rated min -1 with the following command:
FMX T30000000;
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A EXAMPLE "